A method, performed by a mobile management entity (MME), for providing a voice call service to a user equipment (UE) in a mobile communication system and the MME are provided. The method includes receiving, from a mobile management entity (MME), a first message for paging to provide the voice call service to the UE; and sending, to the MME, a second message including a cause associated with a domain change from a packet switching (PS) domain to a circuit switching (CS) domain, wherein, if the MME receives the second message, a third message for requesting suspension of a bearer to provide a service for the UE is sent to a gateway in the PS domain.
Legal claims defining the scope of protection, as filed with the USPTO.
1. A method, performed by an evolved node B (eNB), for providing a voice call service to a user equipment (UE) in a mobile communication system, the method comprising: receiving, from a mobile management entity (MME), a first message for paging to provide the voice call service to the UE; and sending, to the MME, a second message including a cause associated with a domain change from a packet switching (PS) domain to a circuit switching (CS) domain, wherein, if the MME receives the second message, a third message for requesting suspension of a bearer to provide a service for the UE is sent to a gateway in the PS domain.
2. The method of claim 1 , further comprising: setting before the MME transmits the first message, information associated with the UE to a suspended state.
3. The method of claim 1 , wherein the first message comprises a Core Network (CN) domain indicator for indicating a domain where the UE is located in order to receive the voice call service.
4. An evolved node B (eNB) for providing a voice call service to a user equipment (UE) in a mobile communication system, the eNB comprising: a transceiver for transmitting and receiving messages; a controller configured to: control the transceiver to receive, from a mobile management entity (MME), a first message for paging to provide the voice call service to the UE, and control the transceiver to transmit, to the MME, a second message including a cause associated with a domain change from a packet switching (PS) domain to a circuit switching (CS) domain, wherein, if the MME receives the second message, a third message for requesting suspension of a bearer to provide a service for the UE is sent to a gateway in the PS domain.
5. The eNB of claim 4 , wherein, before the MME transmits the first message, information associated with the UE is set to a suspended state.
6. The eNB of claim 4 , wherein the first message comprises a Core Network (CN) domain indicator for indicating a domain where the UE is located in order to receive the voice call service.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
September 24, 2015
October 25, 2016
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